Lanner LEC-2110 - Manual (Page 13)

13
Board Layout
Chapter 3
Embedded and Industrial Computing
SC2T1, SC2T2: Select COM2 Protocol Setting
RS-232
RS-422
RS-485
Switch
Protocol
SC2T1 SC2T2
RS-232
(Default) 1-2
1-5
2-6
3-7
4-8
RS-422
3-4
5-9
6-10
7-11
8-12
RS-485
5-6
5-9
6-10
7-11
8-12
Note: When using RS-422/RS-485 in COM2, you
must enable the “Serial Port2/3 RS485 driver”
option first in the BIOS menu.
Jumper Settings
Serial-ATA Connector (SATA1): It is for connecting a 2.5’’
harddisk to be served as your system’s storage. It can
support SATA II which features Data transfer rates up to
3.0 Gb/s (300 MB/s).
4-pin Serial-ATA Power Connector (PS4S1): It is for
connecting the SATA power cord.
RS-232 Serial Port(COM1): It is a RS-232 port through the
D-SUB9 connector.
Select COM1/COM2 Pin 9 function: Pin 9 of RS-232
port (PCOM1/PCOM2) can be altered according to the
following definition:
RS-232/422/485 Serial Port (COM2): It is a RS-
232/422/485 port through the D-SUB9 connector.
6 7 8 9
1 2 3 4 5
Pin No. Pin Name Pin No. Pin Name
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 GND
Pin No. Function
1 GND
2 TX+
3 TX-
4 GND
5 RX-
6 RX+
7 GND
LEB-2110A
Pin No. Function
1 +12V
2 GND
3 GND
4 +5V
1 2 3 4 5 6 7
1 2 3 4
Pin No. Pin Name
RS-232 RS-422 RS-485
1 DCD TxD- Data-
2 RXD TxD+ Data+
3 TXD RxD+
4 DTR RxD-
5 GND
6 DSR
7 RTS
8 CTS
9 RI
6 7 8 9
1 2 3 4 5
9
5
1 12
8
4
SC2T2
SC2T1
2
1 6
5
1
3
5
2
4
6
Pin No. Function
1-2 (Default) Ring In
3-4 +5V
5-6 +12V